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2006. Sovietcams.
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Triplet-22

                                                                                                       

PT1505. Unknown prototype lens "Triplet-22". Probably made for technical purposes.  Focal length - 4 cm, aperture range f4.5 - f22. Focusing range unknown. Number of elements/groups: 3/3.  Angular field  - 56º. Triplet lenses were used widely on cheap compact cameras (Smena, Vilia), TLRs (Komsomolets, Lubitel, Neva), etc., but never on RF cameras. Zorki (M39) mount.






 

PT1505 - Triplet-22 prototype lens  #630009.